8. I/O Ports
Rev.3.00 Jul. 19, 2007 page 189 of 532
REJ09B0397-0300
8.4
Port 3 (H8/3857 Group Only)
Port 3 is a function of the H8/3857 Group only, and is not provided in the H8/3854 Group.
8.4.1 Overview
Port 3 is an 8-bit I/O port, configured as shown in figure 8.3.
P3
P3
P3
P3
P3
P3 /SO
P3 /SI
P3 /SCK
7
6
5
4
3
2
1
0
Port 3
1
1
1
Figure 8.3 Port 3 Pin Configuration
8.4.2
Register Configuration and Description
Table 8.8 shows the port 3 register configuration.
Table 8.8
Port 3 Registers
Name Abbr.
R/W
Initial
Value
Address
Port data register 3
PDR3
R/W
H'00
H'FFD6
Port control register 3
PCR3
W
H'00
H'FFE6
Port pull-up control register 3
PUCR3
R/W
H'00
H'FFE1
Port mode register 3
PMR3
R/W
H'00
H'FFCA
Summary of Contents for F-ZTAT H8 Series
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